Scale



Dec. 17, 1935. n, c. RocKoLA SCALE 7 Sheets-Sheet l Filed March. '7, v19151 y EZ .iL/foraggi Dec. 17, 19435. D. c. ROCKOLA SCALE Filed March '7, 1951 7 Sheets-Sheet 2 Dec. 17, 1935. D. c. RQCKOLA 2,024,187

SCALE Filed March 7, 1951 'T Sheets-Sheet 3 Dec. 17, 1935. D, c, RocKoLA 2,024,187

SCALE Filed Maren Y', 1951 '7 sneets-sheet 4 [fw/efe faz' Dec 17, 1935 D. c. RocKoLA SCALE Filed March '7, -1931 7 Sheets-Sheet 5 Dec. 17, 1935. D. c. RocKoLA 2,024,137,

SCALE Filed March '7. 1951 7 Sheets-Sheet '7 Cil Patented Dec. 17, 41935 UNITED STATES PATENT OFFICE 4 Claims.

My invention relates to a scale mechanism and housing means therefor, and has for one purpose the provision of a commercial coin in the slot scale. Another object is the provision of improved housing means for such scales. Another object is the provision of improved equalizing means for scales. Another object is the provision of registering means for registering the passage of coins. Another object is the provision of an improved trip mechanism. Other objects will appear from time to time in the course of the specification and claims.

I illustrate my invention more or less diagrammatically in the accompanying drawings, wherem- Figure l is: a side elevation;

Figure 2 is a rear elevation;

Figure 3 is a rear View on an enlarged scale with the back cover removed;

Figure 4 is a view similar to Figure 3 with parts broken away and with the scale mechanism in a diiferent position;

Figure 5 is a section on the line 5-5 of Figure 3;

Figure 6 is` a detail of the coin chute;

Figure 7 is a section on the line 1 1 of Figure 6;

Figure 8 is a section on the line 8--8 of Figure 3;

Figure 9 is a section on the line 9-9 of Figure 3;

Figure 10 is a section on the line lll-l0 of Figure 8;

Figure 11 is a section on the line l I-I I of Figure 10;

Figure l2 is a section on the line |2-l2 of Figure 8, showing the parts in somewhat different position;

Figure 13 is a similar section illustrating the parts in still a different position;

Figure 14 is a section on the line 14-14 of Figure 13;

Figure 15 is a plan view of the top plate; and

Figures 16, 1'7, 18, and 19 are details.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings, A generally indicates any suitable base portion from one end of which upstands the vertical housing member generally indicated as A1 which may for example have a lower door or closure A2, an upper rear door or closure A3 and a top plate generally indicated as A4. A5 indicatesa weighing or scale platform upon which the user stands and which is connected, by the mechanism below set out, with the later described weight recording mechanism.

B generally indicates a rod or tension member whereby the weight upon the platform A5 acts upon the weighing mechanism. At its upper 5 end this rod. penetrates the parts B2 of the bar B1 and is secured theretofor example by the set screw B3. At its lower end the bar B is formed with an eye B4 through which passes the pin B5 which in turn passes through the ears B6 which 10 form part of a linkage generally indicated as B7, the details of which form oi" themselves no part of the present invention. It will be understood, however, that downward pressure upon the platform A5 will cause the rod B to move downward- 15 ly, through depression of said linkage. However, it is important to prevent lateral movement of the bar B and I therefore provide an equalizing lever B8, pivoted at one end as at B9 to the casting or base A. At its other end it is pivoted as at B10 to a lateral extension B1l from the linkage B7. It will therefore be understood that lateral movement of the rod B is substantially eliminated, except for the lateral movement caused by the very slight arc through which the lever B rotates.

Considering now the weighing mechanism, which is housed in the upper portion of the upstanding housing A1, I illustrate a general supporting cage for the scale mechanism. This cage may for example be formed of two parts, for example castings, a forward part and a rear part. I illustrate for example in Figure 5 the front part generally indicated as C. It is secured to bosses Cl on the interior of the main housing or casting A1. Three of these bosses may be employed, as sho-wn in Figure 4. The member C may be secured to the bosses C1 as by the screws C2. The member C is herein shown as composed of webs, which connect the three rearwardly extending bosses C3. Adjacent one of the points of attachment to one of the bosses C1, as shown at the upper right hand corner of Figure 4, is a lateral and upward web extension C4 to which may be screwed the stud C5 which is shown in the upper part of Figure 5. This stud C5 is made removable 45 to permit ready access to and ready removal of the recording drum which is shown in Figure 5 and which will later be described. C6 indicates a Web portion, shown in Figures l0 and ll, which is bored out and screwthreaded as at C", to receive the main bearing assembly for a shaft upon which the recording drum is mounted.

The above main bearing assembly includes an exteriorly screwthreaded sleeve D one end of which is inwardly extended as at D1 to provide, 55

on its inner face an inclined ball race D2. The member D is also inwardly screwthreaded as at D3 to receive an exteriorly screwthreaded ball race member D1, with its inclined face D5 opposed to the face D2. D5 is a screwthreaded locking member whereby the member D1 is locked in place. The members D1 and D5 are both channeled as at D7 and D8 to receive the end of a tool. A set screw D9 serves also to prevent rotation of the sleeve D. D111 indicate balls of such diameter as to remain in position in the ball race f between the opposed walls D2 and D5, regardless of whether or not any shaft or rotary member is interposed within them, as long as the assembly is kept tight and snug. D11 indicates the main shaft with reduced ends D12, the end shown in Figure l1 being in engagement with the balls D111, the shaft being'of course out of engagement with the supporting means for the balls and the ball race structure in general.

rIhe main frame or gauge above described is completed by a rear member, which may also be a Vcasting and which is generally indicated as E. 1t may be described in general as a web structure connecting a number oi' bosses. It may for example be screwed to the bosses C3 of the member C as by the screws E1. Mounted in a center web E2 a ball bearing assembly E3 corresponding to the assembly D to D19 above described and shown in Figures l@ and ll. The relation of the two ball bearing assemblies will be clear from Figure 8, each end of the shaft D11 penetrating one of said ball bearing assemblies. Laterally extending from the web portion E2 is a portion E1, as shown for example in Figures 3 and e, to which is screwthreaded an adjusting screw generaliy indicated as E5 and having an enlarged lrnurled lower head E5. E7 is a lock nut. The head E5 will, when the mechanism is in the position shown in Figure 3, abut against the end of the rod B or against the top Vof the cross head or cross bar B1, secured to the rod B. Adjustment of the screw E5 serves to adjust the setting of the dial which will later be described, being a factory or permanent adjustment.

In order to prevent lateral movement of the upper end of the rod B and of the weighing structure I provide the following equalizing structure which corresponds to and cooperates with the equalizing lever B8 which controls the bottom of the rod B. The twin levers G, G1 are pivoted as at one end to bosses G2 on the lateral extension G3 of the cross bar B1. At their opposite ends lthey are pivoted as at G4 to bosses G5 supported on the web structure E. The levers G G1 therefore worlr in parallel with the lower lever B5, this relationship being clear from Figure Z. The cross bar B1, and thus the rod B, are yieldingly supported by the twin springs H, I1.v The lower ends of said springs are secured to said cross bar equidistantly from and on opposite sides of the connection between the rod B and the cross bar B1. At their upper ends they are secured to the transverse bar H2 which has forwardly turned end portions H3 pivoted as at 1'11 to the web structure E for example to the bosses E15. Any suitable means may be employed to connect the springs I-I to the cross bar B1 or to the pivot member i12. I provide, however, hangers H5 for the upper ends of the springs, which loop over the member 112, and perforated pins I15 for the lower ends of the springs, which may be secured to the member B1, as by the set screws Hl. The hangers H5 may be employed to vary individually the tension upon the springs 1-1, as the lower ends engage the wire of the spring itself. Therefore, rotation of a hanger in one direction or another will raise or lower its point of contact with the spring, thus increasing or diminishing the spring tension.

The tension of the two springs may be unitarily 5 adjusted by adjustment of the position of the member H2, which may be obtained by means of the screw 119 which engages an abutment of the shelf 1119 on the center web E2 of the member E. This engagement will be clear from Figure 8. u) Rotation of the screw 1-19 will raise or lower the member 1-12 in relation to the shelf 1-119. 1111 indicates a lock nut. In adjusting the device the springs H should be adjusted in equality and the springs should be so adjusted that at the zero 15 position of the later to be described drum the adjustment screw E5 or its head E5 will just touch the top of the rod B. As the springs give during operation further adjustment may be made by manipulation of the screw 1-19, the lower adjust- L ment of the screw E5 being undisturbed.

Mounted on the shaft D11 is a hub I. 1t may be pinned to the shaft as by the pin 11, to prevent relative rotation of hub and shaft, one end of pin projecting outwardly beyond the shaft 5 and hub, as shown in FigureV 8. 'Ihe drum I2 with its cylindrical flange I3 is secured to the hub, as by the screws I4. It will be understood that the cylindrical portion I3 is marked with any suitable weight indicating symbols, as shown for example in Eigure 5. 15 indicates a fixed finger indica g the weight. This finger may be mounted. on the hub portion of the web structure E. rihe hub I supports, by a web structure I", an assembly 18 which is channeled as at 19 to form 3 a pulley wheel and which is formed at one side with ratchet teeth 119, laterally out of line with the pulley wheel. One of the teeth is eliminated or cut down, for a purpose which will later appear, the teeth being otherwise regularly spaced O about the rim. 111 indicates a gear loose on the shaft D11 which is held against axial movement as by the collar 112, it being conned between said collar and the end of the hub I. It is provided with a pin 113 adapted to engage the outer end of 5 the pin I1, as shown for example in Figure 8, l2, and 13.

K indicates a segment gear in mesh with the gear 111. The segment is pivotally mounted upon a plate K1 which, in turn, is pivotally mounted as at K2, upon the web member E. It may for example be provided with an adjusting slot K3, through which passes a securing screw K4. The segment K has associated with it, and formed unitarily therewith, an angle arm E25, with an abut- 55 ment member K5 extending therefrom. K1 indicates a pin on the web structure E, adapte-d to limit clockwise rotation of the segment K, as shown for example in Figures l2 or 13. K5 indicates a pin extending from the bar B1, which is G9 adapted to be engaged by the member K5 and to limit the counter clockwise movement of the segment K. Since the bar B1 takes a position which varies in response to the weight upon the weighing platform A5, the position of the pin K5 varies 65 with each difference in weighing. It is worth noting that at each different weight the pin K5 engages the member K5 at a diiferent point along .i the length of said member. The drum is positioned in response to the angle of movement of 70 the segment K. It is advantageous that the pinV K2 and the member K5 should contact at different points for each weight, since this permits an initial factory adjustment to render the weighing accurate, which adjustment may be independently 7 5 made for the different weights. For example the contour of the member K0 may be varied, by building up or filing off, to render it accurate at all weights, this variation being made in accordance with tests. The member K5 may be laterally extended in any suitable manner, to provide for example an increased bearing K17 at the pivotal connection between the member K and the plate K1. This reinforcement is also important in connection with providing a support for a registering cam K9. The member K9 has a cam slot K10 which receives a pin K11 connected by the arm K12 to a shaft K13 which controls any suitable indexing device generally indicated as K14. It may be mounted for example on the bracket structure generally indicated as K15, integral with the plate K1. It will be understood that at each actuation of the scales the movement of the segment serves to actuate the registering device, and in-dicate the number of coins which should be found in the coin box.

Dead ended on the pulley slot I9 is a flexible support, for example a cable or chain L. The opposite end is engaged or secured to a weight L1 which may be guided by a generally vertical tube L2 which may be `supported upon the web structure E. The top of the tube may be slightly bent in as shown at L3 in Figure 8 and is also provided with a set screw L4, adapted to prevent the upward escape of the weight L1 from the tube. It will be understood that the -flexible support is wound about the pulley slot or channel I9. The function of the weight is t-o rotate the drum as far as the mechanism will permit it and the function of the pin 112 on the gear I11 is to govern or limit the rotation of" the drum in response to the weight and also to rotate the drum in retrograde direction, against the weight. As above described, it will be understood that the gear I11 is rotated in response to movement of the segment gear K, movement in one -direction permitting the weight L1 to rotate the drum I2, and movement in the opposite direction positively moving the drum in the retrograde direction against the gravital effect of the weight. When the segment moves down, referring to the position of the parts in which they are shown for example in Figure 4 it winds up the weight, When the segment rises, the weight pulls the drum around, the pins I1 and 113 serving as the limit. In order to prevent undue oscillation of the drum a leaf spring I15 may be employed one end of which is secured to the web structure E, the other engaging the rim I8. The result is a frictional damping contact. The rim is cut away as at 110, to correspond with the Zero position of the drum or dial, and at that position the frictional contact with the spring I15 is eliminated. This permits an easy start and prevents initial locking or resistance against movement of the drum.

M generally indicates a coin chute structure which may be secured to the frame E for example at M1 by a screw M2. Another screw M3, passing through the ear M4, serves to secure the coin chute assembly M to the interior of the main trame or housing. The chute M may include a member M5 extending from the coin slot M0 to the final bottom coin discharge M7. Members M0, may be secured to it, as by the screws M9. As is shown in Figure 6 there are two members M8 which are separated by a hinged wall portion M10 rotatable about the pivot pin M11 normally urged, as by the spring M12, to closed position. It may be opened from without the housing, as by employment of the pin M13 with its exterior knob M14. The inner en-d of the pin M13 passes through an ear M15 and is positioned in relation thereto, as by the pins M10, as shown for example in Figure 7. The hinged wall member M10 is provided with a side opening M1rl of such size as to permit the passage therethrough of articles smaller than 5 a coin of a predetermined minimum size. A leaf spring M18 is indicated, which tends to throw such coins outwardly through the opening M17. The members M5 and M3 are provided with a longitudinal slot M20 the purpose for which will later 10 appear.

As the coins pass downwardly through the above described coin slot structure and pass the apertures M20 each coin, as shown for example in Figure 9, engages the trip member generally indicated as O, which may be a thin rod or wire oiset from the horizontal wire or rod portion 01 which can be seen for example in the upper portion of Figures 3 and 4. The rod O1 is rotatably mounted on the web structure E for example in 29 slots O2 in the bosses or projections O3, provided with cover clips O4. The opposite end. O5 of the trip member or wire extends forwardly beneath a trip lever or bar O5. It normally keeps the wire O O5 in the full line position in which 5 it is shown for example in Figure 9. The lever O0 is pivoted as at O'I on the web member intermediate its ends. At the left hand end of the lever O0, in the position in which it is shown for example in Figures 12 and 13 is a lateral angular 30 extension O8. O9 indicates a pin which is adapted to be engaged by the end projection K20, of the segment K as shown for example in Figure 13. Referring to the lever in the position in which it is shown in Figures l2 and 13 its counter cloek- 35 wise movement about its pivot is limited by the abutment O10 formed in the web structure E. Pivoted to the lever O0 as at O11 is a sub-lever O12 which has a terminal angular offset G13 extending outwardly in an opposite direction from@ the angle member O8 of the lever O5. It is adapted to engage the ratchet teeth I10. In order to limit the movement of the small lever O12 I provide, as stop means, a pin O14 on the smaller lever, penetrating the aperture O15 in the larger 45 lever O0.

P generally indicates an escapement pivoted as at P1 to the web member E. It has an edge portion P2 which in the device in the neutral position is normally engaged by the angle 50 O8 of the lever O0, as shown for example in ure 13. The anti-clockwise rotation of the member P is thus limited by the portion O5 which serves as a stop. The member P includes a tail piece P3 and a lateral extension P4 which carries 55 a pin P5. P0 indicates generally an escapement lever which is rotatable also about the pivot P1 of the esoapement P, but which is provided with a slot P'I to permit also its longitudinal movement in relation to the pivot point. P8 indicates 50 a spring connecting the outer end or the tail piece P3 with the lever P6 which tends normally to hold the parts in the position in which they are shown in Figure 3. P9 indicates a cam indentation in one edge of the lever P5, adjacent 65 the pin P5. In the normal position in which the parts are shown in Figure 3 the pin P5 penetrates the cam aperture P9 and also acts as a stop for preventing lengthwise clockwise movement of the lever P0. The lower end of the lever is shown as 70 provided with ratchet teeth as at P10. Above the teeth P10 is another cam indentation or portion P11. It is in alignment with and may be engaged by a pin P12 fixed upon the web portion E, as shown for example in Figure 12. P13 is a guide, 7'5

lsee the symbols.

secured to the web portion E, to hold the lever Pfi in the plane of its movement. The teeth P1o are adapted to be engaged by a member P14 fixed upon the cross bar B1.

The rod B is guided in a tube S which is held in relation to the top plate S1, as by the screw S2, the plate S1 resting upon lugs S3 inwardly projecting from the main housing A1. The plate S1 is also apertured to permit the extension therethrough of the lower end of the coin chute at M7 as shown for example in Figure 4. The space beneath the plate S1 and exterior to the rod S is adapted to receive and permitthe passage of the coins which are received, at the bottom, upon the inclined plate S4.` The lower end of the tube S passes through the plate S1 and is secured thereto by the screw S5. The door A2 gives access to the coin chamber so formed and permits the removal of the coins therefrom. The upper end of the tube S serves also as an abutment to limit the downward movement or the member or cross piece or cross bar B1. This limit may be set for example as at a complete rotation of the dial, which may if desired indicate 390 points. In any case, when an excess weight is applied to the table A5, the engagement between the member B1 and the top of the tube S Vprevents straining or disengagement of the various removing parts of the weighing mechanism.

The top of the housing A1 is provided with a unitary top plate generally indicated as A4. This plate AA1 is, penetrated by the coin slot M5. It is also provided with an upper inclined mirror T1, which may be inset in or secured to the plate T to be removed from the scales unitarily therewith. The plate A4 as a whole may be held in place for example by the interior screws T2 which penetrate bosses T3 in the plate A1 which bosses seat in apertures in'the ribs or anges T4 of the housing A1. T5 indicate any suitable washers. The plate A4 is provided with an additional aperture T6 in the bottom of which is seated a magnifying lens T7. This lens may for example be an ordinary magnifying lens in which opposite peripheral portions have been cut or ground as at T8. Preferably the lens is of such nature that it not only magniiies the gures on the cylindrical portion I3 of the drum I2, but makes it impossible for an observer to one side readily to In other words the user of the scale can easily see the figures on the scale but privacy is maintained by the difculty with which an observer to the front, side or rear of the user can see the figures. The lens is practically straight or flat on the bottom and is curved on the top and the result is that to an observer standing at any point except upon the platform A5, the figures are out of focus. Also the depth of the aperture T6 at the bottom of which the lens is positioned makes it difficult for an unintended observer to see the ligure-s,

It will be realize-d that whereas I have described and shown a'practioal operative device, nevertheless many changes may be made in size, shape, number and disposition of parts without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative and diagrammatic rather than as limiting me to my specific showing.

The use and operation of my invention are as follows:

operator or customer stands upon the platform A5 and, either before or after he stands on the platform, inserts a coin in the slot M6. As-

suming that the coin is of proper size and weight it passes `downwardly through the coin guide and clockwise direction, referring to the position of the parts as shown in Figure 9. Thereupon the 'crank portion O5 lifts the lever O5, the parts being moved by the coin into the dotted line position as shown in Figure 9. The lever O5 being lifted into the position in which it is shown in Figure fi, the weight of the escapement lever P6 swings the escapement member into the position in which it is shown in Figure 4, with the portion P2 extending under the terminal angular portion O5 of the lever O5. As the Wire O5 drops, the coin having passed on, the lever O6 is held in the position in which it is shown in Figure 4 being seated in the recess P20 above the portion P2 of the member P. The upward movement of the lever O6 moves th-e small sub-lever O12 and its oliset portion 013 out of engagement with the ratchet teeth 110, being shown in this position in Figure 4. Therefore the hub I and vn'th it the drum I2 are released for rotation. It will be noted that this release may take place either prior to or ater the user stands upon the scale platform A5. In other words the user may insert his coin either before or after he gets on the platform, a point wherein the present scale diifers from the scales in the past. As the escapement lever P5 swings counter-clockwise for example into the position in which it is shown in Figure 4, the teeth P111 engage the abutment P14 on the member B1. In case the coin is inserted before the operator stands on the platform A5 the abutment P11 will engage the escapement lever P5 above the teeth and in the form herein shown a Weight of about forty pounds on the vplatform is necessary in order to engage the teeth with the abutment P14. Assuming that the user is standing on the platform A5, the cross head member B1 is depressed to a point where the abutment P11 does engage the teeth P10. The depression of the member B1 lowers also the pin K2, which is mounted upon it and the depression of this pin permits the member K5, and with it the segment gear K to rotate counter-clockwise until the member K6 again strikes the pin K8. The leverage of the pin K2 varies of course with the weight of the person being weighed, the heavier the person the lower the pin K8 will be, and the greater will be the arc or" movement of the segment gear K. The segment K rotates in response toits own weight, its weight being concentrated on one side of its axis of rotation. It therefore is effective to rotate the gear 111, in turn, through the engagement of the pins I1 and 113, rotates the hub I and with it the indicating drum. This rotation also winds up the weight L1. The user reads the weight through the lens T1, the weight being indicated by that figure or symbol on the drum portion I3 which is aligned with the indicating nger I5.

When the user gets off the platform A5 the springs H draw the cross head B1 back to its original position and the pin K3 raises the segment K into its original position, while the weight L1 rotates the drum back to neutral position. As the member B1 rises it also lifts the abutment P11 in engagement with the teeth P10 and therefore lifts the escapement lever P6. Longitudinal movement of the lever is permitted by the slot P". As it lifts, the cam portion P9 of the escapement lever P6 engages the pin P5 and rotates the escapement member P clockwise, referring to Figure 12.

This moves the recess P20 of the escapement lever out of Contact with the portion O8 of the lever O6 and permits the lever to drop into the position in which it is shown in Figure 12 or Figure 3, its rotation being limited by the abutment O10. The sub-lever O12 is then free to engage the ratchet teeth E10. The portion O13 of the lever O12 overrides the ratchet teeth, permitting return of the drum to neutral position, but preventing retrograde movement of the drum to indicating position. As the escapement lever Ps continues to lift it forced outwardly or to the left, referring to the position of the parts in Figure 12, by the engagement of the pin P12 with the cam member P11.

In case a child weighing less than 40 pounds is weighed, the abutment P14 ds not engage the teeth P10 and therefore will not serve to raise the escapement lever P5. However, in such case the retrograde rotation of the segment gear K causes its end Km to engage the pin O9 on the lever O6, and kicks the angular extension O8 out of engagement with the notch P20, and permits it to the position in which it is shown in I 13. This prevents any subsequent use of the scales until another coin is deposited, regardless of w of the user. When the device is in neutral p sit-ion the pin O9 does net normally contact the portion KZO of the segment, but when the weight is released, the rebound of the mechanism is enough to carry it beyond the neutral position to effect the desired contact and to release the lever O6. Further movement of the segment in clockwise direction is limited by the stop pin K7, as shown for example in Figure 13.

Any suitable means may be employed, in association with the segment K, for recording the number of coins which have been deposited. I illustrate for example the cam member K9 with the cam slot K1o which engages the pin K11 and actuates the crank K12 of the recording device K14.

The gate M10 of the coin chute may be actuated from without, through the pin M13, in order to free any oversized articles which may have been stuffed into the coin slot. For example if paper has been stuffed in it can be freed without making it necessary for the operator to open the rear closure of the device. Anything which drops is kept from the penetration of the coin department, and drops upon the plate S1.

As the springs lengthen in use the factory adjustment obtained through the screw H may be supplemented by actuation of the additional and upper adjusting screw H9.

I claim:

1. In a scale structure, a base, a weight receiving member associated with said base, weight indicating means and actuating means therefor, and a connection between the weight receiving member and said actuating means, said actuating means including a rotatable shaft, a gear on said shaft, a segmental gear in mesh with said rst mentioned gear and pivoted adjacent said shaft, and stop means adapted to limit the rotation of said segmental gear, said stop means being movable in response to movement of the weight receiving member, said segmental gear being provided with a unitarily formed stop contacting member, escapement mechanism for controlling movement of the indicating means to and from zero position and cooperative means carried by the segmental gear and escapement mechanism for actuating the latter to engage the indicating means and maintain the same in zero position after a weighing operation.

2. In a scale structure, a base, a weight-receiving member associated with the base, indicating mechanism, actuating means therefor responsive to movements of the weight receiving member, escapement mechanism for controlling movement of the indicating means to and from Zero position, plural means for selectively actuating the escapement mechanism whereby the escapement mechanism locks the indicating mechanism against movement from zero position after each weighing operation, each escapement actuating means being selectively responsive to a predetermined weight on the scale.

3. In a scale structure including aV movable Weighing platform, indicating mechanism, and actuating mechanism for moving the indicating mechanism in response to movements of the platform, weight actuated mechanism including a member mounted for reciprocation in response to movements of the platform, and means for restraining said last-mentioned member against lateral oscillation including a pair of spaced levers mounted for pivotal movement-about fixed points adjacent to the opposite ends of said member, said levers having their. free ends operatively connected to opposite ends of said member, the points of connection between said levers and said member being remote from the pivot points of said levers and said member being disposed between the pivot points of said lever and the free ends thereof whereby to restrain said member against lateral oscillation while permitting free longitudinal reciprocation thereof.

4. In a scale structure including a movable weighing platform, an indicatingvmember and connecting means between the platform and indicating means for actuating the latter, said actuating means including a longitudinally movable link member and bars connected to the link at opposite ends thereof and extending transversely of the link, the combination with said link and connecting bars, of means to restrain said link against lateral movement while permitting free longitudinal movement thereof, comprising a pair of spaced levers mounted for pivotal movement about fixed points adjacent to opposite ends of said link, said levers being disposed to swing in planes parallel to the plane of movement of the link, the free ends of said levers being pivotally connected to the transverse bars carried by the link, and the point of connection between the link and bars lying intermediate the points of connection between the bars and said levers, and the pvot points of said levers.

DAVID C. ROCKOLA. 

